S
M
T
W
T
F
S
26
88°
68°
27
83°
63°
28
77°
60°
29
77°
61°
30
78°
63°
31
81°
64°
1
79°
65°
2
78°
65°
3
82°
64°
4
78°
60°
5
78°
64°
6
80°
64°
7
83°
63°
8
77°
64°
9
80°
59°
10
78°
60°
11
82°
64°
12
83°
64°
13
84°
62°
14
76°
58°
15
78°
59°
16
81°
63°
17
76°
59°
18
82°
61°
19
83°
63°
20
83°
57°
21
74°
54°
22
74°
55°
23
82°
62°
24
82°
62°
25
84°
58°
26
81°
52°
27
75°
51°
28
73°
51°
29
74°
53°
30
77°
55°
31
79°
58°
1
78°
51°
2
75°
50°
3
71°
50°
4
70°
51°
5
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bay City
Bay City's August 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 49° and 68°. The average high for August is 79° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Bay City. See also: September | October | November.